I am having a similar problem as kurosuzeria.
I'm using AVS Video Editor Version 6.0.2.183. When I go to produce the video, it starts the production then an error occurs
"Internal Error was encountered (code: 65536) . Please contact the support service if this error persists. ..."

I've been using this program for years and have never had this problem until about 3 weeks ago. I attached the file I am trying to make a video of.
I've tried all methods to save and I always get the same internal error message.

There is something wrong with the project file you attached, it cannot be downloaded. Please attach it in zip archive. Also, please specify the format of your source files and their approxiate total size.

AVS video editor crash during the final compilation of the project.Error 65536, same message.
Usually it crash not far from the end of the compilation.

For me it comes obvioulsy from overlay videos. If I have added overlay videos in the project it may crash.
Some overlay videos doesnt crash, other does. I checked it many times by removing a suspected overlay video or disabling the overlay video line in the project.

Dunno if everybody here had overlay video in their project when they got the problem.

I'm getting the exact same thing. I have a series of lectures that I'm editing to insert overlays from an accompanying PowerPoint presentation, then publishing in a format with the same settings as the original file. My first video, which was about 750 MB, worked without a hitch. My second video, which is slightly over 1 GB, crashes AVS Video Editor at about 97% done. Then I get the 65536 error.

I'm on a time constraint with this project, so it's incredibly frustrating. As it is it's taking between three and four hours to publish this - it's HD video and processor-intensive - but then, after all that time, I get nothing but failure. This has repeated itself three times.